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7D0261 — NUT ASSEMBLY,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7D0261: NUT ASSEMBLY,TUBE COUPLING.

The NUT ASSEMBLY,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, nut_style: TUBE COUPLING, nut_height: 6.220 INCHES NOMINAL IN, thread_size: 2-1/2-16, thread_class: 2B, thread_series: UN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-358-2594, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
7D0261
NSN: 4730-01-358-2594
NIINs: 013582594, 013586415, 013586417, 013588763, 013774266, 013774267, 013774269, 013849008, 014188942, 014188944, 014191872
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
nut_styleTUBE COUPLING
nut_height6.220 INCHES NOMINAL IN
thread_size2-1/2-16
thread_class2B
thread_seriesUN
overall_length0.700 INCHES NOMINAL IN
outside_diameter2.840 INCHES NOMINAL IN
style_designatorNUT ASSEMBLY
thread_directionRIGHT-HAND
surface_treatmentANODIZE
width_across_flats6.220 INCHES NOMINAL IN
NSN4730-01-358-2594
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7D0261 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 5.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NUT ASSEMBLY
•
OUTSIDE DIAMETER: 6.220 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SIZE: A5.875-12
•
SCREW THREAD SERIES DESIGNATOR: UN
•
SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED5.000 INCHES NOMINAL IN
STYLE DESIGNATORNUT ASSEMBLY
OVERALL LENGTH0.930 INCHES NOMINAL IN
OUTSIDE DIAMETER6.220 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD SIZEA5.875-12
SCREW THREAD SERIES DESIGNATORUN
SURFACE TREATMENTPASSIVATE
THREAD CLASS3B
MATERIALSTEEL COMP 630 OR STEEL COMP XM-12
SUBSTITUTES & CROSS-REFERENCES 2
NA30150-20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
7D0261C80Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7D0261?
7D0261 is a NUT ASSEMBLY,TUBE COUPLING.
What parts can replace 7D0261?
There are 2 known substitutes for 7D0261: NA30150-20, 7D0261C80. Substitute compatibility should be verified for your specific system.
What is the NSN for 7D0261?
7D0261 is cataloged in the U.S. Government catalog under NSN 4730-01-358-2594. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.